Christian Fröschlin's Avatar

Christian Fröschlin

@chrfrde.bsky.social

Amateur astronomer from urban 15th floor balcony. Celestron 8" / Lunt 40 / Galileoscope. Software developer. Image processing / HALCON. Fledgling skeptic. He/him.

2,637 Followers  |  299 Following  |  835 Posts  |  Joined: 01.07.2023
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Posts by Christian Fröschlin (@chrfrde.bsky.social)

Yes it shows because the telescope is Alt-Az mounted

09.03.2026 02:16 — 👍 2    🔁 0    💬 0    📌 0

If you look carefully at the great red spot you can see that it appears to move a bit faster than the dark structures to the south this is due to differential rotation.

08.03.2026 23:47 — 👍 1    🔁 0    💬 0    📌 0
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Time lapse of #Jupiter Wednesday night covering two hours of real time. 60 x 3000 x 12 ms RGB in Celestron 8" + 2.5x powermate. #astrophotography

08.03.2026 23:39 — 👍 92    🔁 20    💬 3    📌 1
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Lena A note from the author You can now buy this story as part of my collection, Valuable Humans in Transit and Other Stories. This collection also includes a sequel story, titled "Driver". This articl...

Reminds me of this one qntm.org/mmacevedo

08.03.2026 21:40 — 👍 1    🔁 0    💬 0    📌 0

Reports of a bright fireball today over Germany / Benelux / France, apparently also some small meteorite impacts vrtnws.be/p.vLe8jPDyR

08.03.2026 21:17 — 👍 16    🔁 6    💬 1    📌 1

In this current harsh world, let's warm a few hearts remembering the events of 7-8 March 1991, when the 90,000 people of Brindisi woke up to find 25,000 Albanians roaming the streets of their town. For perspective, that's roughly equivalent to 25k people suddenly landing in Hastings [Thread] >> 1

07.03.2025 14:34 — 👍 501    🔁 219    💬 13    📌 52
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Chlorine Dioxide, Raw Camel Milk: The FDA No Longer Warns Against These and Other Ineffective Autism Treatments The FDA has taken down a webpage warning about therapies and products making “false claims” of treating autism. It’s part of a series of actions the agency has taken under Secretary Robert F. Kennedy ...

Chlorine dioxide, a chemical used for disinfecting and bleaching.

Pressurized pure oxygen.

Raw camel milk.

Under RFK Jr., the FDA has taken down a webpage warning about these and other dangerous remedies claiming to treat autism.

02.03.2026 00:00 — 👍 1307    🔁 624    💬 105    📌 142
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The Sun photobombed by a skydiver!
📸 Nigel Wood
March 5, 2026
Langar, Nottinghamshire, U.K

spaceweathergallery2.com/indiv_upload...

07.03.2026 12:13 — 👍 12    🔁 2    💬 0    📌 0
A similar view to the previous post in this thread but now the great red spot appears near the right limb. Also we see it at a different angle.

A similar view to the previous post in this thread but now the great red spot appears near the right limb. Also we see it at a different angle.

Meanwhile on #Jupiter: Great red spot rotating out of view

04.03.2026 22:36 — 👍 0    🔁 0    💬 0    📌 0
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a man says it is cellular peptide cake Alt: a man says it is cellular peptide cake
04.03.2026 22:19 — 👍 33    🔁 0    💬 2    📌 0

Ah thus the saying the foot always lands on the cat

04.03.2026 21:56 — 👍 1    🔁 0    💬 0    📌 0
Overexposed blurry view of Jupiter system with a large bright splotch to the right and three bright dots to the left. Each of the bright spots shows a three-spiked rainbow-like interference pattern caused by a special mask placed in front of the telescope. When the spike pattern is symmetrical the middle line centered the telescope is in focus.

Overexposed blurry view of Jupiter system with a large bright splotch to the right and three bright dots to the left. Each of the bright spots shows a three-spiked rainbow-like interference pattern caused by a special mask placed in front of the telescope. When the spike pattern is symmetrical the middle line centered the telescope is in focus.

High gain live-stretched view of Jupiter system with 3 moons through Bahtinov mask. My preferred way to focus for Jupiter shots #astrophotography

04.03.2026 21:53 — 👍 11    🔁 0    💬 2    📌 0
Circular disk of Jupiter centered against black background. Brownish and white strips alternate. The great red spot makes a dent in the southern brown belt. It is trailed by a cloud structure containing a bright dot.

Circular disk of Jupiter centered against black background. Brownish and white strips alternate. The great red spot makes a dent in the southern brown belt. It is trailed by a cloud structure containing a bright dot.

Quick view of #Jupiter hot off the scope (taking data for time lapse).

04.03.2026 21:45 — 👍 42    🔁 2    💬 2    📌 0
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Sheryl Weikal, the Name Your Own Price Lawyer | BECAUSE REPRESENTATION IS A HUMAN RIGHT | Patreon BECAUSE REPRESENTATION IS A HUMAN RIGHT

Hello Friends! I need your help. I loathe asking for money On Here, but at this point I don't have much choice.

As you know, my entire practice is "name your own price/pay what you can." More than half my clients pay less than what it costs to represent them.

www.patreon.com/c/weikallaw

03.03.2026 16:41 — 👍 133    🔁 118    💬 2    📌 8
Cat with a wrench and a cig sharing bad news related to human parts availability

Cat with a wrench and a cig sharing bad news related to human parts availability

Cats contemplating human spinal flexibility

03.03.2026 17:35 — 👍 142    🔁 18    💬 0    📌 0
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This is the Blood Moon again, but this time 30 6-second images stacked. I think it might have gained a little bit in detail, but I might like the color better on the first one. #Astronomy #Astrophotography

03.03.2026 13:55 — 👍 64    🔁 12    💬 1    📌 0
closeup of a total lunar eclipse. The upper left has a dark orange shade that becomes lighter moving to the lower right. The lower right limb is whitish.

closeup of a total lunar eclipse. The upper left has a dark orange shade that becomes lighter moving to the lower right. The lower right limb is whitish.

Last night's total lunar eclipse at mid-eclipse. You can tell it is close to the edge of the umbra at lower right. Also called a blood moon if you have orange blood. Takahashi TSA 120, modified Sony Alpha 7 III, 1s exposure moon, 10s stars, ISO 400. #astrophotography

03.03.2026 17:27 — 👍 82    🔁 12    💬 4    📌 2
Inverted radio telescope

Inverted radio telescope

Lovell radio telescope at Jodrell Bank, UK.

03.03.2026 15:17 — 👍 61    🔁 14    💬 2    📌 3
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two minions are standing on a scaffolding in front of a sign that says ' triangle ' on it Alt: two minions architects realize blueprint of pyramid was upside down

🤔

03.03.2026 17:20 — 👍 4    🔁 0    💬 0    📌 0
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Astronomer Nevil Maskelyne racked up a £141 alcohol bill during his 18 month expedition to observe the 1761 Transit of Venus.

That’s over £26,000 ($35,000) in today’s money.

Or almost £50 per day.

He claimed it on expenses and would go on the become Astronomer Royal.

#astronomy #histsci 🧪

02.03.2026 19:14 — 👍 94    🔁 18    💬 6    📌 5

Trying to google prices of rum in 1761 and this would buy about 5 liters / day? Prices might be higher on an island though.

02.03.2026 20:24 — 👍 0    🔁 0    💬 1    📌 0
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Inside the plan to kill Ali Khamenei Israel spent years hacking Tehran’s traffic cameras and monitoring bodyguards ahead of the assassination of Iran’s supreme leader

"Nearly all the traffic cameras in Tehran had been hacked for years, their images encrypted and transmitted to servers in Tel Aviv and southern Israel, according to two people familiar with the matter." www.ft.com/content/bf99...

02.03.2026 18:36 — 👍 168    🔁 53    💬 8    📌 32

The trans women in women's sports thing annoys the fuck out of me because trans women were first allowed to compete as women in the Olympics in 2004. This was the policy for at least 6 summer Olympics, at which not a single trans woman ever won a medal.

02.03.2026 17:31 — 👍 465    🔁 140    💬 1    📌 2
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Total Lunar Eclipse on March 2–3, 2026 – Where and When to See Total lunar eclipse on March 2–3, 2026: Where and when is the Blood Moon visible and what will it look like? Visibility map, animation, and local times.

🌕➡️🔴 Lunar eclipse alert!

Depending on where you are (mostly: Central/Eastern Asia, Oceania, most of North/Central America), you may be able to see a TOTAL LUNAR ECLIPSE ("blood moon") overnight!

You can find information about timing and viewing locations here: www.timeanddate.com/eclipse/luna...

02.03.2026 19:01 — 👍 425    🔁 188    💬 18    📌 37

Antonio Guterres is up first at this Security Council meeting. He condemns this morning’s strikes by Israel and the US on Iran, and the return strikes by Iran on countries in the region. There is, he says, no alternative to the peaceful settlement of disputes

28.02.2026 21:13 — 👍 451    🔁 150    💬 3    📌 27
TID and the Airborne Snow Observatory
YouTube video by Turlock Irrigation District TID and the Airborne Snow Observatory

Here’s a great video featuring one of my former HS students turned hydrologist!

youtu.be/TOJI4jZsjbQ?...

01.03.2026 00:30 — 👍 15    🔁 1    💬 1    📌 1
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What Elon Has Done Elon Musk's destruction of USAID has faded from public consciousness in America, despite leaving death and destruction in its wake.

"500 metric tons of high-energy food, intended for child refugees in Afghanistan and Pakistan under the age of five, were incinerated, as were ten million dollars of contraceptives"

24.02.2026 22:38 — 👍 558    🔁 354    💬 15    📌 35
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2. Several prominent outlets falsely reported that the Trade Act of 1974 gives Trump the legal authority to impose temporary tariffs of up to 15% in response to *trade deficits*

THIS IS NOT TRUE

24.02.2026 13:45 — 👍 112    🔁 30    💬 1    📌 0

The European commissioner for human rights urges countries planning to exercise authoritarian restrictions on children's access to online connection to instead focus on creating safer online platforms that protect children's rights.

24.02.2026 07:11 — 👍 956    🔁 354    💬 8    📌 7

and that, my fellow academics, is one reason not to hire war criminals: so they can't show up years post (their) war arguing in favor of the scaffolding behind their own atrocities with the imprimatur and status of your university

23.02.2026 23:49 — 👍 2475    🔁 494    💬 46    📌 6